namespace 项目02;
class Phone
{
    public string 拥有者;
    public string 型号;
    public string 号码;
    public string Getinfo()
    {
        return $"拥有者:{拥有者}\n型号:{型号}\n号码:{号码}";
    }
    public Phone(string 拥有者, string 型号, string 号码)
    {
        this.拥有者 = 拥有者;
        this.型号 = 型号;
        this.号码 = 号码;
    }
    public Phone(){
        this.拥有者="";
        this.型号="";
        this.号码="";
    }
}